Apparatus for the manufacture of gas



(No Model.) 2 SheetsSheet 1. K. M. MITCHELL.

APPARATUS FOR THE MANUPAGTURE 01? GAS- No. 433,802. Patented Aug. 5, 1890.

FIE-Ll- I I 7/ 1 jgggw/ (No Model.) 2 Sheets-Shet 2. K. M. MITCHELL.

v APPARATUS FOR THE MANUFACTURE 0Pv GAS.

No. 433,802. Patented Aug. 5, 1890.

FIE'JI- HILI THE NORRIS rzTEns co. wow-mac; WASHINGTON, n. c,

KERR M. MITCHELL, OF ST. JOSEPH, ASSIGNOR OF ONE-HALF TO JOHN DELL, OF ST. LOUIS, MISSOURI.

APPARATUS FOR THE MANUFACTURE OF GAS.

SPECIFICATION forming part of Letters Patent No. 433,802, dated August 5, 1890.

Application filed September 4, 1889. Serial No. 323,008- (No modeL) To all whom it may concern:

Be it known that I, KERR M. MITCHELL, of the city of St. Joseph, Buchanan county, State of Missouri, have invented a certain new and useful Improvement in Apparatus for the Manufacture of Gas, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, fprming part of this specification.

Thejimprovement relates to devices used in the charging and discharging of the retorts in gas-benches having a pit extending in front of the bench, a platform supported on wheels and which spans the pit in front of any bench where the retorts are to be charged or discharged.

' Figure I is a vertical section at I I, Fig. II. Fig. II is a vertical section at II II, Fig. I.

1 is a retort-bench, which may be of any preferred construction. The retorts are seen at 2.

3 is the door to the furnace and ash-pit. The elevated feeding-mouth of the furnace is seen at 4.

5 is a pit extending along the front of the bench and giving access to the doors 3 of all the benches. The front wall of the furnace may of course constitute the inner, while the wall or bank 11 forms the outer, wall of the pit. At each side of the pit'5 is a fixed or permanent floor 6.

7 is a wheeled platform or temporary floor, which may be wheeled in front of either of the benches for use in charging or discharging the retorts. The'top of the wheeled platform or temporary floor 7 is flat, and has an unobstructed surface flush with and meeting the floor 6 on both sides of the pit 5, so that the said platform makes a continuous bridge or floor over the pit. The platform or floor 7 is supported upon wheels 8, which travel on a way composed of rails 9, extending along each side of the pit 5. These rails may be supported in any suitable manner. The means of support which is shown consists of a number of brackets or chairs 10, secured to the walls of the pit by bolts 11, the rails being bolted tot-he brackets, as shown. The platform or truck 7 should have side-boards 12.

It will be seen that the wheeled platform or temporary fioor will be scarcely any obstruction to the circulation of air in the pit 5, even when it is in use, and when not in use it may be run beyond the end of the pit, so as to be out of the way. Thus all conveniences of an unbroken floor 6 are insured in connection with benches having the deep furnaces extending below the level of the floor, and access to which is had by an open pit 5.

I claim as my invention- 1. The combination, with the permanent floor, the retort-bench, the furnace for heatin g said retort-bench arranged below the level of the floor, and the wall or bank 11, forming with the wall of the furnace the open pit 5, of a Way arranged in said pit, and a shiftable platform or temporary floor supported upon said way before the bench and having its surface flush with the permanent floor, substantially as set forth.

2. The combination, with the permanent floor, the retort-bench, the furnace for heating said retort-bench arranged below the level of the floor, and the wall or bank 11, forming with the wall of the furnace the open pit 5, of a way arranged in said pit below the level of the floor, a shiftable platform supported upon said way before the bench and having its surface flush with the permanent floor, and the side-boards 12 on said platform, substantially as set forth.

3. The combination, with the permanent,

floor, the retort-bench, the furnace below the level of said floor for heating said bench, and the wall or bank 11, forming with the wall of the furnace the open pit 5, of the rails, supported at the side of the pit below the level of the floor, a flat-topped platform mounted before the bench on Wheels on said rails and having its surface unobstructed and extending from and forming a continuation of the permanent floor, substantially as set forth.

KERR M. MITCHELL. 

